Criminal disposition (4)
![Ross](/clue/static/ross-mug.min.png)
I believe the answer is:
bent
I believe this clue is a double definition.
'criminal' is the first definition.
(I've seen this before)
'disposition' is the second definition.
(I've seen this before)
(Other definitions for bent that I've seen before include "Propensity, preference" , "Twisted or determined" , "Criminal - aptitude" , "Slang for dishonest or crooked" , "Dodgy" .)